IIIN · Insteel Industries Inc

Track IIIN — free Ask ALVIS about IIIN

$30.55 -2.06 (-6.32%)

Market Cap

$631.27M

19.36M

Options Chain

15-min delayed Underlying $30.55 · today Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 16 contracts

Put / call OI

8.46

Put-heavy positioning

Open interest

331

contracts outstanding

Volume

traded today

Max pain

$30.00

$0.55 below spot

ATM implied vol

58.2%

market's expected move

Open interest by strike

Calls Puts

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Oct 16 79d Jan 15 170d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	249.6%	0.927	—		—	—	—	—	0
Call · $15 In the money Last — Breakeven — Implied vol 249.6% Delta 0.927 ≈93% ITM Gamma 0.007 Theta -0.057 Vega 0.009 Open interest 0 Model this call Put · $15 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	186.7%	0.923	—		—	-0.032	132.8%	—	0
Call · $17.5 In the money Last — Breakeven — Implied vol 186.7% Delta 0.923 ≈92% ITM Gamma 0.01 Theta -0.044 Vega 0.01 Open interest 0 Model this call Put · $17.5 Last — Breakeven — Implied vol 132.8% Delta -0.032 ≈3% ITM Gamma 0.007 Theta -0.016 Vega 0.006 Open interest 0 Model this put
0	—	151.9%	0.905	—		—	-0.045	109.4%	—	0
Call · $20 In the money Last — Breakeven — Implied vol 151.9% Delta 0.905 ≈91% ITM Gamma 0.015 Theta -0.042 Vega 0.011 Open interest 0 Model this call Put · $20 Last — Breakeven — Implied vol 109.4% Delta -0.045 ≈4% ITM Gamma 0.011 Theta -0.017 Vega 0.006 Open interest 0 Model this put
0	—	132.7%	0.86	—		$0.30	-0.076	93%	10	10
Call · $22.5 In the money Last — Breakeven — Implied vol 132.7% Delta 0.86 ≈86% ITM Gamma 0.022 Theta -0.048 Vega 0.017 Open interest 0 Model this call Put · $22.5 Last $0.30 Breakeven $22.20 Implied vol 93% Delta -0.076 ≈8% ITM Gamma 0.02 Theta -0.022 Vega 0.012 Open interest 10 Model this put
0	—	95.6%	0.83	—		$0.47	-0.129	77.8%	2	6
Call · $25 In the money Last — Breakeven — Implied vol 95.6% Delta 0.83 ≈83% ITM Gamma 0.035 Theta -0.04 Vega 0.018 Open interest 0 Model this call Put · $25 Last $0.47 Breakeven $24.53 Implied vol 77.8% Delta -0.129 ≈13% ITM Gamma 0.035 Theta -0.027 Vega 0.018 Open interest 6 Model this put
19	2	72.7%	0.575	$2.40		$0.55	-0.411	43.8%	1	280
Call · $30 In the money Last $2.40 Breakeven $32.40 Implied vol 72.7% Delta 0.575 ≈58% ITM Gamma 0.071 Theta -0.048 Vega 0.03 Open interest 19 Model this call Put · $30 Last $0.55 Breakeven $29.45 Implied vol 43.8% Delta -0.411 ≈41% ITM Gamma 0.117 Theta -0.028 Vega 0.03 Open interest 280 Model this put
Underlying $30.55
16	1	68.1%	0.238	$0.20		—	—	—	—	0
Call · $35 Last $0.20 Breakeven $35.20 Implied vol 68.1% Delta 0.238 ≈24% ITM Gamma 0.06 Theta -0.035 Vega 0.022 Open interest 16 Model this call Put · $35 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	68.6%	0.068	—		—	—	—	—	0
Call · $40 Last — Breakeven — Implied vol 68.6% Delta 0.068 ≈7% ITM Gamma 0.025 Theta -0.015 Vega 0.009 Open interest 0 Model this call Put · $40 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 764401 CUSIP 45774W108 13F (30d) 35 filings 35 filers Visit website Investor relations